The transport is said to have increased its speed to Warp 3.9 as it left Earth. Since Enterprise is some 100 light years away at this point, then even if they headed back at warp 5 it should take the two at least six months before they could intercept. We could argue that the transport did a small transwarp hop somewhere... but Archer expected to be able to intercept them, and never questioned the timeframe in which he actually did so.

In DS9 we see Tarkaleans and they look nothing whatever like the ones we see here. So are there two or more different sub-groups of the Tarkaleans with very different appearences? Not unprecedented, given the Xindi, but it's rather odd.

Worst Moment :

What's most depressing about this episode is that in some ways it is very good. We finally see the Tarkarians, we have mention of the Bynars later seen in TNG, we get some interesting info about phase pistols. And the episode as a whole is reasonably entertaining, despite being a little contrived.

But... the whole idea of having the Borg in this episode stinks. After "Dark Frontier" we knew that the Federation had some knowledge of the Borg prior to Picard's encounter with then at system J25. But now Starfleet has multiple photographs, details medical scans, first hand eyewitness accounts of fighting the Borg... and they still have tons and tons of Borg wreckage on Earth and Borg technology left over on Enterprise for Trip to examine. It is no longer credible that the Enterprise-D crew did not know about the Borg. So is this an alternate timeline, created by the Borg when they went back in time? The E-E was isolated from such changes, so if Picard looked up what had happened at J25, would he find that Data actually reported that this was the same species encountered by Enterprise in 2153? If we accept this, then every single thing in all other series of Star Trek is potentially invalid. This turns what would have been a 2 or 3 score into a zero.

Body Count :

Two drones killed on Enterprise. T'Pol reports 29 on the Borgified ship, who are presumably all killed when it is destroyed.

Factoid :

In case you have been living in a Tibetan monestary and didn't hear, the Borg wreckage found in the Arctic circle is supposed to be the remains of the sphere destroyed by the Enterprise-E in "Star Trek : First Contact".

Plotline

A group of researchers in Earth's Arctic circle stumble across the wreckage of a large spacecraft. The find two bodies, both Humanoids with some sort of technology implanted throughout their bodies - Borg drones. When the Borg revive they assimilate the researchers and steal their ship - choosing a course that takes them directly towards Enterprise.